All of the following home energy-saving improvements are simple to make after a home is built except:
A) installing thicker attic insulation
B) caulking cracks around windows and doors
C) installing storm windows and doors
D) installing thicker wall insulation
E) adding heat pumps

Question

Quizplus · Accepted Answer

Installing thicker wall insulation is not simple to make after a home is built because it often involves significant alterations to the existing structure, such as removing interior or exterior wall finishes to access the wall cavities.

All of the Following Home Energy-Saving Improvements Are Simple to Make